2016
Dr Line Kleinebreil
2013
Prof Jose Boavida, Portugal
2006
Prof. Aldo Maldonato, Italy
1998
Prof. Jean-Philippe Assal, Switzerland

1992
Dr. John Day, UK
1988
Dr. John Alvisatos, Greece
1985
Prof. Jean-Philippe Assal, Switzerland

1982
Prof. Jean-Philippe Assal, Switzerland

1979